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Elliptical exercise apparatus cams

a technology of elliptical exercise apparatus and cam, which is applied in the direction of gymnastic exercise, sport apparatus, frictional force resistor, etc., can solve the problems of ankle stress, achieve low joint impact and upper body exercise, less pedal articulation, and reduce ankle stress

Inactive Publication Date: 2006-05-30
ESCHENBACH PAUL WILLIAM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0018]Movement of the pedals cause the first portion of the foot support member to follow an elongate orbital path similar to an ellipse where the longer major axis of the ellipse is generally horizontal to provide the longer stride length. The shorter minor axis of the ellipse results in less pedal articulation.

Problems solved by technology

Excessive pedal articulation causes ankle stress.

Method used

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  • Elliptical exercise apparatus cams
  • Elliptical exercise apparatus cams
  • Elliptical exercise apparatus cams

Examples

Experimental program
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Embodiment Construction

[0026]Referring to the drawings in detail, pedals 50 and 52 are shown in FIGS. 1 and 2 in the most forward and rearward positions of the first embodiment. Pedals 50 and 52 are supported by foot support members 54 and 56 and traverse an elongate closed loop path 1. Foot support members 54,56 are connected to guide links 58,60 at pivots 51,53 and connected to drive links 24,26 at pivots 25,27. Guide links 58,60 are connected to frame member 80 at pivots 55,57.

[0027]Drive links 24,26 are connected to crank arms 20,22. Crank arms 20,22 are joined as generally opposed at pivot axis 43 to form a crank. Cam guides 4,96 are attached to frame members 76,78. Cam contacts 29,31 are connected to drive links 24,26 and are engaged with cam guides 4,96. Cam contacts 29,31 are offset relative to that portion of drive links 24,26 that contain pivots 21,23 and 25,27 to lower shroud 3.

[0028]Drive links 24,26, crank arms 20,22 and cam guides 4,96 form a pair of path generating linkages configured to gu...

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Abstract

The present invention relates to a standup exercise apparatus that simulates walking, jogging and climbing with arm exercise. More particularly, the present invention relates to an exercise machine having separately supported pedals for the feet and arm exercise coordinated with the motion of the feet. Elliptical cross trainers guide the feet along a generally elliptical shaped curve to simulate the motions of jogging and climbing. Existing elliptical cross trainers often use excessive pedal articulation which can overwork the ankle to achieve a longer stride. The present invention is an improved elliptical exercise machine capable of extended exercise with less pedal articulation that is more ankle friendly. One end of a foot support member is guided by a guide link for back and forth movement while the other end is guided by a drive link with cam guide to drive an alternator and flywheel. The resulting pedal motion-is foot friendly. Stride length can be adjusted. Handles are coordinated with the foot support members for arm exercise.

Description

BACKGROUND OF THE INVENTION[0001]1. Field[0002]The present invention relates to a standup exercise apparatus that simulates walking, jogging and climbing with arm exercise. More particularly, the present invention relates to an exercise machine having separately supported pedals for the feet and arm exercise coordinated with the motion of the feet.[0003]2. State of the Art[0004]The benefits of regular exercise to improve overall health, appearance and longevity are well documented in the literature. For exercise enthusiasts the search continues for safe apparatus that provides full body exercise for maximum benefit in minimum time.[0005]Recently, a new category of exercise equipment has appeared on the commercial market called elliptical cross trainers. These cross trainers guide the feet along a generally elliptical shaped curve to simulate the motions of jogging and climbing. Generally they use long cranks to generate a long foot stride having excessive pedal articulation. There i...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): A63B69/16A63B22/04
CPCA63B22/001A63B22/0664A63B21/0051A63B21/0053A63B21/0085A63B21/012A63B2022/067A63B22/0015A63B24/00A63B21/225
Inventor ESCHENBACH, PAUL WILLIAM
Owner ESCHENBACH PAUL WILLIAM
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